What is double cleansing and do I need it?

Double cleansing involves using an oil-based cleanser first to dissolve sunscreen, makeup, and sebum, followed by a water-based cleanser to remove remaining impurities and water-soluble debris. It is most beneficial for those who wear SPF, makeup, or have oily skin. People with dry or sensitive skin using minimal products may find a single gentle cleanser sufficient. It is a personal preference based on your routine and skin type.